Product Details : Solid Contoured Backup Ring 0.437" x 0.812" x 0.076" - Nitrile
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Part No: 8-309/N90
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Product Category: O-Rings
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Product Type: Solid Contoured Backup Ring
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Series: 8-XXX
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Dash No.: -309
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Material(s): Nitrile
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Material Code: NBR
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Durometer: 90
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Temperature Range: -40°F to +250°F (-40°C to +121°C)
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System Of Measurement: Inch
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Dimensions: 0.437" x 0.812" x 0.076"
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Nominal I.D. (d)
: 0.437"
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Nominal O.D. (D)
: 0.812"
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Nominal Width (W): 0.187"
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R: 0.262"
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Actual Thickness (T): 0.076"
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A: 0.060"
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Actual Width (W): 0.183"
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Details:
•Back-Up Rings are predominantly used in conjunction with O-rings for both static and dynamic sealing applications
•They prevent the O-ring from extruding when it is subjected to high pressures, or when clearance gaps are excessive
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*Photos for reference purposes only.